Optical Network Proposal - 954 Words

CHAPTER 1 INTRODUCTION 1.1 OVERVIEW AND MOTIVATION The great growth in user’s demand for bandwidth due to today’s network applications stir the competition between network carriers. FSAN began studies to access needs in late 2010, they concluded that there is a great gap between user needs and the bandwidth offered by the 10 gbps capable Passive Optical Network (10G-PON known as XGPON) technologies. A system proposal for Next Generation- Passive Optical Network (NG-PON2) stage 2 was commenced in 2011. Among other solutions Time and Wavelength Division Multiplexing Passive Optical Network (TWDM-PON) technology was recommended at the April 2012 meeting as a primary solution to design and implement NG-PON2 [1]. This network design achieves†¦show more content†¦Through the distribution fiber (DF), each output port of RN1 goes to a different remote node 2 (RN2) which includes a power splitter (PS), and then each output port of the PS is connected to a different ONU by the last mile fiber (LMF). According to the RN1 configuration, we have three variants of a TWDM-PON architecture: a) Wavelength Selected TWDM-PON with PSs at the RN1; b) Wavelength Split TWDM-PON with arrayed waveguide grating (AWG) at the RN1; and c) Wavelength Switched TWDM-PON with wavelength selective switches (WSSs) at the RN1. The wavelength selected TWDM-PON is a fully flexible solution as the PS at RN1 broadcasts all wavelengths to all users, but has a high insertion loss and poor security due to the use of only PSs. The wavelength split TWDM-PON has a fixed wavelength allocation and thus will not be able to serve flexibility advantages. However, paper [4] shows that the full flexibility is not always required and a partial flexible solution can already give several advantages of flexibility. Overcoming the drawbacks of both wavelength selected and wavelength split, paper [5] proposed such a partially flexible solution with a WSS in RN1, which we refer as the wavelength switched TWDM-PON. To address some of the challenges related to the future high capacity transport networks, a particular communication system should mainly focus on three major areas (i.e., impact of traffic locality on the network infrastructure, cost versus reliability of futureShow MoreRelatedFi-Wi Technology1692 Words   |  7 PagesFi-Wi TECHNOLOGY (Fiber Wireless Network Architecture) Gande Kiran Kumar, IT Department, MallaReddy Inst of Eng Tech(MRIET) , Maisammaguda, Secunderabad. kirangande92@gmail.com 8099225308. ,Gajula Vijay Kumar , IT Department, MallaReddy Inst of Eng Tech(MRIET) Maisammaguda, Secunderabad Shivavijay06@gmail.com 8125746522. 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